package net.bwie.realtime.jtp.dws.log.function;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import net.bwie.realtime.jtp.dws.log.bean.PageViewBean;
import net.bwie.realtime.jtp.utils.DateTimeUtil;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.common.state.StateTtlConfig;
import org.apache.flink.api.common.state.ValueState;
import org.apache.flink.api.common.state.ValueStateDescriptor;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.configuration.Configuration;

import java.util.HashMap;

public class PageViewBeanMapFunction extends RichMapFunction<String, PageViewBean> {

    // 1.声明状态
    private ValueState<String> lastVisitDateState = null;

    // 地区字典数据
    private HashMap<String, String> areaDic = null;

    @Override
    public void open(Configuration parameters) throws Exception {
        /*
            todo 每个mid使用状态保存最近一次访问日期，由于统计每天UV，所以状态生命周期为1天即可，可以设置状态TTL为1day，节省内存使用
         */
        // 状态描述符
        ValueStateDescriptor<String> valueStateDescriptor = new ValueStateDescriptor<>("lastVisitDate", String.class);
        // ttl配置
        StateTtlConfig ttlConfig = StateTtlConfig
                .newBuilder(Time.days(1))
                .updateTtlOnCreateAndWrite()
                .neverReturnExpired()
                .build();
        valueStateDescriptor.enableTimeToLive(ttlConfig);
        // 2.初始化
        lastVisitDateState = getRuntimeContext().getState(valueStateDescriptor);

//         地区字典数据初始化
        areaDic = getAreaDic();

    }

    private HashMap<String, String> getAreaDic() {
        // map集合
        HashMap<String, String> map = new HashMap<>();
        // 添加数据
        map.put("110000","北京");
        map.put("120000","天津");
        map.put("140000","山西");
        map.put("150000","内蒙古");
        map.put("130000","河北");
        map.put("310000","上海");
        map.put("320000","江苏");
        map.put("330000","浙江");
        map.put("340000","安徽");
        map.put("350000","福建");
        map.put("360000","江西");
        map.put("370000","山东");
        map.put("710000","台湾");
        map.put("230000","黑龙江");
        map.put("220000","吉林");
        map.put("210000","辽宁");
        map.put("610000","陕西");
        map.put("620000","甘肃");
        map.put("630000","青海");
        map.put("640000","宁夏");
        map.put("650000","新疆");
        map.put("410000","河南");
        map.put("420000","湖北");
        map.put("430000","湖南");
        map.put("440000","广东");
        map.put("450000","广西");
        map.put("460000","海南");
        map.put("810000","香港");
        map.put("820000","澳门");
        map.put("510000","四川");
        map.put("520000","贵州");
        map.put("530000","云南");
        map.put("500000","重庆");
        map.put("540000","西藏");
        // 返回集合
        return map ;
    }

    @Override
    public PageViewBean map(String value) throws Exception {
        // a.解析json
        JSONObject jsonObject = JSON.parseObject(value);
        JSONObject object = jsonObject.getJSONObject("common");
        JSONObject pageObject = jsonObject.getJSONObject("page");

        // todo 依据地区编码获取省份名称
        String arValue = object.getString("ar");
        String province = areaDic.getOrDefault(arValue,arValue);

        // uv访客数
        Long uvCount = 0L;
        // b.获取上一次访问时间
        String lastVisitDate = lastVisitDateState.value();
        // 获取当前数据日期
        String visitDate = DateTimeUtil.convertLongToString(jsonObject.getLong("ts"), DateTimeUtil.DATE_FORMAT);
        // b-1 值为null时,表示今日第一次访问,uv字段为1
        // b-2 值不为null时，上一次访问日期 != 当前数据日期，也表示
        if( null == lastVisitDate || !lastVisitDate.equals(visitDate)){
            uvCount = 1L;
            // step4. 更新状态值
            lastVisitDateState.update(visitDate);
        }

        // 返回实例对象
        return new PageViewBean(
          null,
          null,
          object.getString("ba"),
          object.getString("ch"),
          province,
          object.getString("is_new"),
          // sv: 1 或 0 -> last_page_id IS NULL: 1,否则为0
          pageObject.get("last_page_id") == null ? 1L : 0L,
          1L,
          pageObject.getLong("during_time"),
          // uv: 1 或 0 -> mid 第1次出现: 1. 否则为0 -> 状态
          uvCount,
          jsonObject.getLong("ts")
        );
    }


    @Override
    public void close() throws Exception {
        super.close();
    }
}
